A flexible electronic gravure printing blade system
By designing a flexible electronic gravure printing squeegee system, the shortcomings of existing equipment in squeegee pressure and angle control were solved, enabling adaptive adjustment to different electronic inks, improving printing quality and production efficiency, and ensuring the consistency of electrical performance of flexible electronic devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUAZHONG UNIV OF SCI & TECH
- Filing Date
- 2026-03-20
- Publication Date
- 2026-06-16
AI Technical Summary
Existing gravure printing equipment's squeegee system struggles to meet the high precision and versatility requirements of flexible electronic devices in terms of controlling squeegee pressure, squeegee angle, and squeegee pressure uniformity. This is especially true when using different types of electronic inks, making it difficult to guarantee printing quality and mass production capabilities.
A flexible electronic gravure printing squeegee system was designed. Through the combination of components such as cylinders, linear guides, bearings, and adjusting screws, the squeegee pressure and angle can be flexibly adjusted. It has self-adaptive capabilities and can adapt to the rheological characteristics of different electronic inks, ensuring printing uniformity and stability.
It achieves precise control of squeegee pressure and angle, improves printing quality and production efficiency, ensures the electrical performance consistency and printing uniformity of flexible electronic devices, and adapts to the printing requirements of various electronic inks.
Smart Images
Figure CN122211049A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of flexible electronic gravure printing, and more specifically, relates to a flexible electronic gravure printing squeegee system. Background Technology
[0002] Flexible electronic devices have gradually moved out of the laboratory in recent years and are being applied in many emerging fields, such as flexible sensing applications in automobiles, functional flexible electronic films in home appliances, and flexible sensing applications in wearable and implantable medical devices. However, in the production and manufacturing of flexible electronic devices, specialized, efficient, and high-precision manufacturing equipment still urgently needs to be developed. Among the many flexible electronic manufacturing processes, gravure printing, due to its extremely stable and high production efficiency, is considered an effective process for achieving mass production, high performance, and low cost of flexible electronic devices.
[0003] However, there are currently very few complete sets of gravure printing equipment and supporting systems specifically for the manufacture of flexible electronic devices in the industry. Existing traditional gravure printing machines used in the packaging and printing industry are insufficient to meet the manufacturing and production needs of flexible electronic devices in terms of key process parameter control functions and precision. The existing gravure printing equipment on the market is mainly used for printing on packaging film products, using color inks with relatively uniform rheological properties to meet the color presentation of the packaging film. Therefore, the ink transfer precision during the printing process is relatively low. Unlike color inks used in packaging printing, functional electronic inks used for printing flexible electronic devices are far more complex than ordinary color printing inks in terms of both material types and rheological properties. For example, when using gravure printing to prepare flexible sensing or semiconductor devices, different types of electronic inks, such as conductive inks, sensing functional inks, dielectric inks, semiconductor inks, and insulating inks, have different functional core fillers and dispersing solvents. As a result, the electronic inks obtained from these formulations have significant differences in rheological properties such as ink viscosity and surface tension. Therefore, gravure printing of flexible electronic devices requires higher and more complex control capabilities and precision in the core printing functional units to adapt to the printing requirements of various electronic inks.
[0004] The squeegee system, a crucial component in gravure printing, plays a vital role in determining print quality and mass production capabilities when using different types of electronic inks for gravure printing of flexible electronic devices. When printing flexible electronic devices (such as RFID antennas, flexible sensors, or semiconductor devices), the squeegee must thoroughly scrape away ink from non-image areas while ensuring precise and consistent ink levels within the cells. This ensures uniform ink transfer onto the flexible substrate and good printability. Uneven ink scraping can lead to open circuits, short circuits, or unstable electrical performance of the flexible electronic devices, directly impacting the device yield. Therefore, the squeegee system must possess flexible adjustment and adaptation capabilities for its core functional parameters (squeegee pressure, squeegee angle, and squeegee pressure uniformity) to meet the requirements of different electronic ink gravure printing processes. Existing doctor blade systems can only meet the ink scraping requirements of ordinary packaging gravure printing. They are insufficient to meet the needs of flexible electronic gravure printing manufacturing, both in terms of ink scraping precision and for electronic inks with different rheological properties and material types. This is mainly because they lack the ability to adjust parameters such as doctor blade pressure, doctor blade angle, and doctor blade pressure uniformity. Therefore, there is an urgent need to develop an adaptive doctor blade system with more flexible and precise control of angle and pressure. Summary of the Invention
[0005] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a flexible electronic gravure printing squeegee system, the purpose of which is to develop an adaptive squeegee structure that can more flexibly and precisely control the angle and pressure.
[0006] To achieve the above objectives, according to one aspect of the present invention, a flexible electronic gravure printing squeegee structure system is provided, comprising: a squeegee blade (201); an upper squeegee blade clamping plate (202) and a lower squeegee blade clamping plate (204) for clamping the squeegee blade (201); an upper squeegee mounting plate (205) parallel to and located below the lower squeegee blade clamping plate (204); a bearing mounting seat (210) parallel to and located directly below the upper squeegee mounting plate (205) and having an area smaller than the upper squeegee mounting plate (205); a first bearing (209) with its upper surface fixed to the center of the lower surface of the upper squeegee mounting plate (205) and its lower surface positioned and fixed to the center of the upper surface of the bearing mounting seat (210); and parallel A middle mounting plate (211) located below the bearing mounting seat (210) and having an area larger than the bearing mounting seat (210); two second linear guides (226) mounted parallel to the upper surface of the middle mounting plate (211) and used to control the movement of the bearing mounting seat (210) in a direction consistent with the front-back direction of the scraper blade; two cylinders (206) fixed to both sides of the upper surface of the middle mounting plate (211) respectively via cylinder seats (236); two floating joints (207) respectively fitted onto the telescopic rods of the two cylinders (206) and directly movably connected to both sides of the lower surface of the upper mounting plate (205) of the scraper seat; and two air pressure regulating valves (226) connected to the two cylinders (206). 16); Two upper rotating hinges (227) are fixedly installed parallel to each other on both sides of the lower surface of the middle mounting plate (211); a lower mounting plate (217) is located parallel to the lower surface of the middle mounting plate (211); two lower rotating hinges (229) are installed vertically on both sides of the upper surface of the lower mounting plate (217) and rotatably connected to the corresponding upper rotating hinges (227) by axle pins (228); two first adjusting screws (212) are located on both sides of the middle mounting plate and the lower mounting plate, respectively, and are placed vertically, relative to the front of the scraper blade and behind the middle mounting plate and the lower mounting plate; two first adjusting knobs (208) are respectively fitted on the upper ends of the two first adjusting screws (212); for adjusting the two first adjusting screws (212) 2) Two nut assemblies fixed to the rear side of the bottom surface of the lower mounting plate (217) at the lower end; two bearings located between the first adjusting knob (208) and the nut assembly through which the adjusting screw passes; two screw mounting seats (213) with bearings at one end and fixedly connected to the rear side of the bottom surface of the middle mounting plate at the other end; a mounting base (218) located below the lower mounting plate (217); two third linear guides (230) mounted on the upper surface of the mounting base (218) and fixing the lower mounting plate (217) in a direction consistent with the front and rear direction of the scraper blade; a screw assembly for controlling the movement of the third linear guides (230) in a direction consistent with the front and rear direction of the scraper blade; Wherein, both sides are two sides in the same direction as the long axis of the scraper blade; the extension direction of the telescopic rod is the front-back direction of the scraper blade; The mounting base (218) includes: a base plate parallel to the lower mounting plate, a vertical plate vertically connected to the base plate, a first linear guide rail (220) provided on one side of the vertical plate with an extension direction consistent with the long axis direction of the scraper blade, and a control component for controlling the vertical plate to move left and right along the linear guide rail in a direction consistent with the long axis direction of the scraper blade. When the equipment is working normally, the two cylinders (206) push the telescopic rod to extend through air pressure, and push the two sides of the upper mounting plate (205) of the scraper to move forward respectively. When the roller axis is not parallel, resulting in uneven contact pressure between the blade and the roller, the two sides of the upper mounting plate (205) of the scraper seat move forward at different angles. The first bearing (209) rotates adaptively, and at this time the bearing mounting seat (210) moves forward or backward under the constraint of the second linear guide (226). When the first adjustment knob (208) is rotated, it drives the first adjustment screw (212) and the outer spherical bearing to move up and down spirally under the constraint of the nut assembly. At this time, the outer spherical bearing drives the screw mounting seat (213) to press down or lift up, thereby driving the middle mounting plate (211) to rotate around the center of the shaft pin (228) by the screw mounting seat (213), so as to realize the adjustment of the contact angle between the scraper blade and the tangent of the roller.
[0007] Furthermore, a locking handle (203) is installed vertically through the lower clamping plate (204) of the scraper blade and locks the lower clamping plate (204) of the scraper blade onto the upper surface of the upper mounting plate (205).
[0008] Furthermore, the nut assembly includes: a nut (214) and a nut mounting base (215); The other end of the first adjusting screw (212) is threaded inside the nut (214); the nut (214) is inserted into the mounting hole of the nut mounting seat (215), and the nut mounting seat (215) is placed on both sides of the nut (214) and fixed on the lower mounting plate (217).
[0009] Furthermore, the lead screw assembly includes: a second adjusting lead screw (231); a square nut (232); a second adjusting knob (224); a locking assembly (225); and a lead screw mounting plate (221). The second adjusting screw (231) is connected to the second adjusting knob (224) at one end, passes through the locking assembly (225) and the screw mounting plate (221) in sequence, and is screwed into the square nut (232) at the other end; the screw mounting plate (221) is installed on the rear side of the bottom surface of the lower mounting plate (217).
[0010] Furthermore, the lead screw assembly also includes a feed scale; the feed scale is set on the second adjusting lead screw (231) and is used to record the feed amount in the forward direction of the lead screw scraper.
[0011] Furthermore, there are two sets of first linear guide rails (220), which are respectively set on both sides of the vertical plate. The control components for controlling each set of first linear guide rails (220) include: reducer (222), drive motor (223), eccentric shaft (234), second bearing (235), limit groove (233), and mounting base (219). One end of the reducer (222) is connected to the drive motor (223), and the other end is equipped with an eccentric shaft (234) and fixed behind the mounting base (218). The second bearing (235) is fitted on the eccentric shaft (234) and placed inside the limiting groove (233). The limiting groove (233) is installed on the mounting seat (219) located in front of the vertical plate. When the drive motor (223) rotates, it drives the reducer (222) to rotate, which in turn drives the eccentric shaft (234) to rotate eccentrically. Through the action of the eccentric shaft (234), the mounting base (218) moves back and forth along the first linear guide rail (220).
[0012] According to another aspect of the present invention, a flexible electronic gravure printing system is provided, wherein the squeegee is a flexible electronic gravure printing squeegee system as described above.
[0013] In summary, compared with the prior art, the technical solutions conceived by this invention have the following main advantages: 1. This invention proposes a flexible electronic gravure printing squeegee system, which has flexible adjustment functions for parameters such as squeegee pressure, squeegee angle, and squeegee pressure uniformity. Specifically, when the equipment is operating normally, after the two cylinders 206 are ventilated, the telescopic rods extend, pushing the upper mounting plate 205 of the squeegee forward. Due to the presence of the first bearing 209, the upper mounting plate 205 of the squeegee can also rotate around the first bearing 209. Since the bearing mounting base 210 is fixed to the middle mounting plate 211 by two parallel second linear guide rails 226, the two ends of the squeegee only have the ability to move in the horizontal forward-backward direction, while they are fixed in the vertical plane and horizontal left-right direction. The left-right movement of the squeegee is controlled only by the mounting base. With the cooperation of two sets of cylinder systems, two sets of linear guides, and one set of bearing systems, the doctor blade system has the ability to adapt to uneven doctor blade pressure on both sides of the printing roller caused by axial parallelism errors in the installation and processing of the printing roller. The non-rigid support of the cylinder pressure also weakens the vibration generated during the rotation of the printing roller, thus ensuring the overall uniformity of the doctor blade pressure and guaranteeing the uniformity and stability of the printed electronic device films. Furthermore, when the first adjustment knob 208 is rotated, it drives the first adjustment screw 212 and the outer spherical bearing to move helically up and down under the constraint of the nut assembly. At this time, the outer spherical bearing drives the screw mounting seat 213 to press down or lift up, thereby causing the screw mounting seat 213 to drive the middle mounting plate 211 to rotate around the center of the shaft pin 228, realizing the adjustment of the contact angle between the entire doctor blade and the tangential of the roller. Therefore, the doctor blade structure proposed in this invention can more flexibly and precisely control the angle and pressure, and is flexibly applicable to various printing inks.
[0014] 2. The present invention further proposes to set a feed amount for recording the forward direction of the lead screw doctor blade. Using a feed scale, the displacement of the doctor blade in the direction of the third linear guide 230 can be effectively reproduced in different printing batches. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the gravure printing equipment provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a flexible electronic gravure printing squeegee system provided in an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the flexible electronic gravure printing squeegee system from another perspective; Figure 4 This is a schematic diagram illustrating the cooperation between the flexible electronic gravure printing doctor blade and the printing roller assembly in a gravure printing apparatus provided in an embodiment of the present invention.
[0016] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Printing roller assembly; 2. Scraper assembly; 201. Scraper blade; 202. Upper scraper blade clamping plate; 203. Locking handle; 204. Lower scraper blade clamping plate; 205. Upper scraper blade mounting plate; 206. Cylinder; 207. Floating joint; 208. First adjusting knob; 209. First bearing; 210. Bearing mounting seat; 211. Middle mounting plate; 212. First adjusting screw; 213. Screw mounting seat; 214. Nut; 215. Nut mounting seat; 216. Air pressure regulating valve; 217. Lower mounting plate; 218. Mounting base; 219. Fixed seat; 20. First linear guide rail; 221. Lead screw mounting plate; 222. Reducer; 223. Drive motor; 224. Second adjusting knob; 225. Locking assembly; 226. Second linear guide rail; 227. Upper rotary hinge; 228. Shaft pin; 229. Lower rotary hinge; 230. Third linear guide rail; 231. Second adjusting lead screw; 232. Square nut; 233. Limiting groove; 234. Eccentric shaft; 235. Second bearing; 236. Cylinder seat; 237. Adjusting roller assembly; 238. Ink supply assembly; 239. Front upright plate; 230. Base plate; 231. Rear upright plate. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.
[0018] Example 1 A flexible electronic gravure printing squeegee system includes: a squeegee blade 201; an upper squeegee blade clamping plate 202 and a lower squeegee blade clamping plate 204 for clamping the squeegee blade 201; an upper squeegee blade mounting plate 205 located parallel to and below the lower squeegee blade clamping plate 204; a bearing mounting seat 210 located parallel to and directly below the upper squeegee blade mounting plate 205 and with an area smaller than the upper squeegee blade mounting plate 205; a first bearing 209 whose upper surface is fixed to the center of the lower surface of the upper squeegee blade mounting plate 205 and whose lower surface is positioned and fixed to the center of the upper surface of the bearing mounting seat 210; and a bearing 209 located parallel to and below the bearing mounting seat 210 and with an area larger than the bearing 209. The bearing mounting base 210 has a middle mounting plate 211; two second linear guide rails 226 are installed parallel to the upper surface of the middle mounting plate 211 and used to control the movement of the bearing mounting base 210 in the same direction as the front and rear direction of the scraper blade; two cylinders 206 are fixed to both sides of the upper surface of the middle mounting plate 211 by cylinder seats 236; two floating joints 207 are respectively sleeved on the telescopic rods of the two cylinders 206 and directly movably connected to both sides of the lower surface of the upper mounting plate 205 of the scraper blade seat; and two air pressure regulating valves 216 are connected to the two cylinders 206; and are respectively fixed parallel to the middle mounting plate. Two upper rotating hinges 227 on both sides of the lower surface of the 211; a lower mounting plate 217 parallel to the lower surface of the middle mounting plate 211; two lower rotating hinges 229 vertically mounted on both sides of the upper surface of the lower mounting plate 217 and rotatably connected to the corresponding upper rotating hinges 227 via pins 228; two first adjusting screws 212 vertically placed on both sides of the middle and lower mounting plates relative to the front of the scraper blade; two first adjusting knobs 208 respectively fitted on the upper ends of the two first adjusting screws 212; used to support and fix the lower ends of the two first adjusting screws 212 to the lower mounting plate. Two nut assemblies on the rear side of the bottom surface of mounting plate 217; two bearings located between the first adjusting knob 208 and the nut assemblies through which the adjusting screw passes; two screw mounting seats 213 with bearings at one end and fixedly connected to the rear side of the bottom surface of the middle mounting plate at the other end; a mounting base 218 located below the lower mounting plate 217; two third linear guides 230 mounted on the upper surface of the mounting base 218 and fixing the lower mounting plate 217 in a direction consistent with the front-back direction of the scraper blade; and a screw assembly for controlling the movement of the third linear guides 230 in a direction consistent with the front-back direction of the scraper blade. Wherein, both sides are two sides in the same direction as the long axis of the scraper blade; the extension direction of the telescopic rod is the front-back direction of the scraper blade; Mounting base 218 includes: a base plate parallel to the lower mounting plate, a vertical plate vertically connected to the base plate, a first linear guide rail 220 provided on one side of the vertical plate with an extension direction consistent with the long axis direction of the scraper blade, and a control component for controlling the vertical plate to move left and right along the linear guide rail in a direction consistent with the long axis direction of the scraper blade. When the equipment is working normally, the two cylinders 206 push the telescopic rod to extend through air pressure, which pushes the two sides of the upper mounting plate 205 of the scraper to move forward respectively. When the roller axis is not parallel, resulting in uneven contact pressure between the blade and the roller, the two sides of the upper mounting plate 205 of the scraper seat move forward at different angles. The first bearing 209 rotates adaptively, which causes the bearing mounting seat 210 to move forward or backward under the constraint of the second linear guide 226. When the first adjustment knob 208 is rotated, it drives the first adjustment screw 212 and the outer spherical bearing to move up and down spirally under the constraint of the nut assembly. At this time, the outer spherical bearing drives the screw mounting seat 213 to press down or lift up, thereby driving the middle mounting plate 211 to rotate around the center of the shaft pin 228, so as to realize the adjustment of the contact angle between the scraper blade and the roller tangent.
[0019] The current gravure printing equipment has the following structural problems, which seriously restrict the industrialization process of flexible electronic gravure printing manufacturing: (1) Insufficient doctor blade function: The gravure printing doctor blades currently used in the packaging industry are too simple in structure and lack the function of adjusting important parameters such as doctor blade angle and pressure; (2) Insufficient adaptability of the doctor blade: Most doctor blades currently used are rigid mechanisms for angle adjustment and doctor blade pressure control, which makes it difficult to adapt to electronic inks with diverse rheological properties and to ensure the continuous manufacturing needs of gravure printing for flexible electronic devices. (3) Insufficient adjustable range of doctor blade angle and pressure: Due to the variety of electronic inks used to manufacture gravure printing flexible electronic devices, and the different rheological properties, the doctor blade system is required to have greater doctor blade pressure and angle adjustment function compared with the traditional packaging gravure printing doctor blade system. (4) Poor accuracy of repeated setting of squeegee pressure and angle: The existing squeegee angle and pressure device mainly relies on the experience of printing machine operators to adjust each printing. There is no calibration or measuring device for accurate repeated setting, which not only seriously affects production efficiency, but also makes it difficult to ensure the electrical consistency of flexible electronic devices.
[0020] like Figure 1 As shown, the gravure printing equipment mainly includes: a printing roller assembly 1, a doctor blade assembly 2, an adjusting roller assembly 3, an inking assembly 4, a front upright plate 5, a bottom plate 6, and a rear upright plate 7. This embodiment proposes a flexible electronic gravure printing doctor blade, corresponding to... Figure 1 Scraper component 2 in the middle.
[0021] In a preferred embodiment, a locking handle 203 is installed vertically through the lower clamping plate 204 of the scraper blade and locks the lower clamping plate 204 onto the upper surface of the scraper mounting plate 205. The clamping handle allows for replacement of the clamping plate and the scraper blade it holds, as needed.
[0022] As a preferred embodiment, the nut assembly includes: a nut 214 and a nut mounting base 215; wherein, the other end of the first adjusting screw 212 is threadedly installed inside the nut 214; the nut 214 is inserted into the mounting hole of the nut mounting base 215, and the nut mounting base 215 is placed on both sides of the nut 214 and fixed on the lower mounting plate 217.
[0023] As a preferred embodiment, the lead screw assembly includes: a second adjusting lead screw 231, a square nut 232, a second adjusting knob 224, a locking assembly 225, and a lead screw mounting plate 221; The second adjusting screw 231 is connected at one end to the second adjusting knob 224, passes through the locking assembly 225 and the screw mounting plate 221 in sequence, and is screwed into the square nut 232 at the other end; the screw mounting plate 221 is installed on the rear side of the bottom surface of the lower mounting plate 217. The advantages of using left and right dual adjusting screws to adjust the doctor blade angle are: the angle between the doctor blade and the tangent of the printing roller can be flexibly adjusted; at the same time, since both left and right adjusting screw assemblies are locked and fixed with screws and nuts, the stability and consistency of the set doctor blade angle during the printing process can be guaranteed; and the presence of left and right dual adjusting screws and the locking assembly can ensure that the height of the doctor blade angle at both ends of the printing roller axis is consistent, avoiding relative over-adjustment of the left and right doctor blade angles.
[0024] As a preferred embodiment, the lead screw assembly described above also includes a feed scale on the second adjusting lead screw 231; this scale is mounted on the second adjusting lead screw 231 and is used to record the feed amount in the direction of the doctor blade's forward movement. Through the feed scale, the displacement of the doctor blade in the direction of the third linear guide 230 can be effectively reproduced in different printing batches.
[0025] In a preferred embodiment, there are two sets of first linear guide rails 220, respectively arranged on both sides of the vertical plate. The control components for controlling each set of first linear guide rails 220 include: a reducer 222, a drive motor 223, an eccentric shaft 234, a second bearing 235, a limiting groove 233, and a mounting base 219. The reducer 222 is connected to the drive motor 223 at one end and the eccentric shaft 234 is mounted on the other end and fixed behind the mounting base 218. The second bearing 235 is fitted on the shaft of the eccentric shaft 234 and placed inside the limiting groove 233. The limiting groove 233 is installed on the mounting base 219 located in front of the vertical plate. When the drive motor 223 rotates, it drives the reducer 222 to rotate, which in turn drives the eccentric shaft 234 to rotate eccentrically. Through the action of the eccentric shaft 234, the mounting base 218 reciprocates along the first linear guide rail 220.
[0026] The left and right reciprocating movement of the scraper is achieved by a servo motor reducer and an eccentric shaft assembly, which results in a limited range of left and right reciprocating movement. Therefore, in this embodiment, the linear guide rail used does not need to run through the entire long axis of the blade. Only linear guide rails with shorter strokes need to be installed on the left and right sides. Therefore, two sets of first linear guide rails 220 are set.
[0027] As an implementation example, such as Figure 2 , Figure 3 As shown, the scraper assembly 2 includes: a scraper blade 201, an upper scraper blade clamping plate 202, a locking handle 203, a lower scraper blade clamping plate 204, an upper scraper mounting plate 205, a cylinder 206, a floating joint 207, a first adjusting knob 208, a first bearing 209, a bearing mounting seat 210, a middle mounting plate 211, a first adjusting screw 212, a screw mounting seat 213, a nut 214, a nut mounting seat 215, a pressure regulating valve 216, a lower mounting plate 217, and a... The system includes a base 218, a fixed seat 219, a first linear guide rail 220, a lead screw mounting plate 221, a reducer 222, a drive motor 223, a second adjusting knob 224, a locking assembly 225, a second linear guide rail 226, an upper rotating hinge 227, a shaft pin 228, a lower rotating hinge 229, a third linear guide rail 230, a second adjusting lead screw 231, a square nut 232, a limit groove 233, an eccentric shaft 234, a second bearing 235, and a cylinder seat 236.
[0028] In specific implementation, the scraper blade 201 is clamped between the upper scraper blade clamping plate 202 and the lower scraper blade clamping plate 204, and is secured by screws. The locking handle 203 passes through the lower scraper blade clamping plate 204, locking the lower scraper blade clamping plate 204 onto the upper surface of the upper scraper mounting plate 205. The upper surface of the first bearing 209 is positioned and fixed at the center of the lower surface of the upper scraper mounting plate 205, and the lower surface of the first bearing 209 is positioned and fixed at the center of the upper surface of the bearing mounting seat 210. The bearing mounting seat 210 is fixed to the middle mounting plate 211 by two parallel second linear guide rails 226. Two cylinders 206 are respectively mounted on the sides of two cylinder seats 236. The bottom surfaces of the two cylinder seats 236 are respectively mounted on the middle mounting plate 211 by positioning pins and are respectively placed on both sides of the middle mounting plate 211. The telescopic rods of the two cylinders 206 are respectively fitted with floats. The moving joint 207 and the floating joint 207 are movably installed under the scraper seat mounting plate 205 and are respectively placed on both sides of the scraper seat mounting plate 205. Two air pressure regulating valves 216 are respectively placed at both ends of the side of the lower mounting plate 217. The left air pressure regulating valve 216 controls the left cylinder 206, and the right air pressure regulating valve 216 controls the right cylinder 206. When the equipment is working normally, after the two cylinders 206 are ventilated, the telescopic rod extends and pushes the upper mounting plate 205 of the scraper to move forward. Due to the presence of the first bearing 209, the upper mounting plate 205 of the scraper can also rotate around the first bearing 209. Since the bearing mounting base 210 is fixed on the middle mounting plate 211 by two parallel second linear guide rails 226, the two ends of the scraper only have the ability to move in the horizontal front-back direction. They are fixed in the vertical plane and the horizontal left-right direction. The left and right movement of the scraper is only controlled by the mounting base. With the cooperation of two sets of cylinder systems, two sets of linear guides and one set of bearing systems, the doctor blade system has the ability to adapt to uneven doctor blade pressure on both sides of the printing roller caused by errors in the axial parallelism of the printing roller installation and processing. Due to the non-rigid support of the cylinder pressure, the doctor blade system has the effect of weakening the vibration generated when the printing roller rotates, thereby ensuring the overall uniformity of the doctor blade pressure and thus ensuring the uniformity and stability of the printing of electronic device films.
[0029] Two upper rotary hinges 227 are respectively installed under the middle mounting plate 211 and are placed parallel to each other on both sides of the middle mounting plate 211. Two lower rotary hinges 229 are respectively installed on the lower mounting plate 217 and are placed parallel to each other on both sides of the lower mounting plate 217. The upper rotary hinges 227 and lower rotary hinges 229 are rotatably connected by a pivot pin 228. The upper rotary hinge 227 is fixedly connected to the bottom surface of the middle mounting plate by a nut. A first adjusting knob 208 is fitted at one end of the first adjusting screw 212 and passes through the outer spherical surface fitted inside one end of the screw mounting seat 213. The bearing and the other end of the lead screw mounting seat 213 are fixedly connected to the bottom surface of the middle mounting plate. The other end of the first adjusting lead screw 212 is threaded into the nut 214. The nut 214 is inserted into the mounting hole of the nut mounting seat 215. The nut mounting seat 215 is placed on both sides of the nut 214 and fixed to the side of the lower mounting plate 217. When the first adjusting knob 208 is rotated, it drives the adjusting lead screw to move up and down. Through the lead screw mounting seat 213, it drives the middle mounting plate to rotate around the center of the shaft pin 228, thereby realizing the adjustment of the contact angle between the entire doctor blade and the tangent of the roller. This allows the doctor blade system to meet the requirements of different types of electronic inks with various rheological properties for different doctor blade working angles.
[0030] The lower mounting plate 217 is fixed by two parallel third linear guide rails 230 and the mounting base 218. One end of the second adjusting screw 231 is screwed into the center of one end of the square nut 232. The square nut 232 is fixed on the mounting base 218. The other end of the square nut 232 is fitted with a bearing and inserted into the screw mounting plate 221. The locking assembly 225 is fitted on the other end of the second adjusting screw 231. The second adjusting knob 224 is fitted on the other end of the second adjusting screw 231. The screw mounting plate 221 is installed on the side of the lower mounting plate 217.
[0031] The mounting base 218 is slidably connected to the fixed seat 219 via four parallel first linear guide rails 220. The fixed seat 219 is fixed to the lower surface of the printing roller mounting plate. One end of the reducer 222 is connected to the drive motor 223, and the other end is equipped with an eccentric shaft 234 and fixed to the side of the mounting base 218. The second bearing 235 is fitted on the shaft of the eccentric shaft 234 and placed inside the limiting groove 233. The limiting groove 233 is installed on the side of the fixed seat 219. When the drive motor 223 rotates, the eccentric shaft 234 causes the mounting base 218 to reciprocate along the first linear guide rails 220, realizing the reciprocating movement of the entire scraper system, thereby ensuring the scraper effect.
[0032] like Figure 4 As shown, the scraper assembly 2 is located on one side of the printing roller, and the scraper blade 201 acts on the surface of the printing roller.
[0033] Example 2 A flexible electronic gravure printing system, wherein the squeegee is a flexible electronic gravure printing squeegee system as described in Example 1.
[0034] The relevant technical solutions are the same as above, and will not be repeated here.
[0035] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A flexible electronic gravure printing squeegee system, characterized in that, include: Scraper blade (201); upper scraper blade clamping plate (202) and lower scraper blade clamping plate (204) for clamping the scraper blade (201); upper scraper mounting plate (205) parallel to the lower scraper blade clamping plate (204); bearing mounting seat (210) parallel to the upper scraper mounting plate (205) and located below it, with an area smaller than the upper scraper mounting plate (205); first bearing (209) with its upper surface fixed to the center of the lower surface of the upper scraper mounting plate (205) and its lower surface positioned and fixed to the center of the upper surface of the bearing mounting seat (210); and a bearing mounting seat (209) parallel to the center of the upper surface of the bearing mounting seat (210) and located below it, with an area larger than the center of the bearing mounting seat (210). Mounting plate (211); two second linear guides (226) parallel to the upper surface of the middle mounting plate (211) and used to control the movement of the bearing mounting seat (210) in the same direction as the front and rear direction of the scraper blade; two cylinders (206) fixed to both sides of the upper surface of the middle mounting plate (211) by cylinder seats (236); two floating joints (207) respectively sleeved on the telescopic rods of the two cylinders (206) and directly movably connected to both sides of the lower surface of the upper mounting plate (205) of the scraper seat; two air pressure regulating valves (216) connected to the two cylinders (206); and two other valves fixed parallel to the upper surface of the middle mounting plate (211). Two upper rotating hinges (227) on both sides of the lower surface; a lower mounting plate (217) parallel to the middle mounting plate (211) below; two lower rotating hinges (229) respectively vertically mounted on both sides of the upper surface of the lower mounting plate (217) and rotatably connected to the corresponding upper rotating hinges (227) by axle pins (228); two first adjusting screws (212) located on both sides of the middle mounting plate and the lower mounting plate, opposite to the front of the scraper blade and placed vertically; two first adjusting knobs (208) respectively fitted on the upper ends of the two first adjusting screws (212); used to support and fix the lower ends of the two first adjusting screws (212) to the lower surface. Two nut assemblies on the rear side of the bottom surface of the mounting plate (217); two bearings located between the first adjusting knob (208) and the nut assembly through which the adjusting screw passes; two screw mounting seats (213) with bearings at one end and fixedly connected to the rear side of the bottom surface of the middle mounting plate at the other end; a mounting base (218) located below the lower mounting plate (217); two third linear guides (230) mounted on the upper surface of the mounting base (218) and fixing the lower mounting plate (217) in a direction consistent with the front-back direction of the scraper blade; a screw assembly for controlling the movement of the third linear guides (230) in a direction consistent with the front-back direction of the scraper blade; Wherein, both sides are two sides in the same direction as the long axis of the scraper blade; the extension direction of the telescopic rod is the front-back direction of the scraper blade; The mounting base (218) includes: a base plate parallel to the lower mounting plate, a vertical plate vertically connected to the base plate, a first linear guide rail (220) provided on one side of the vertical plate with an extension direction consistent with the long axis direction of the scraper blade, and a control component for controlling the vertical plate to move left and right along the linear guide rail in a direction consistent with the long axis direction of the scraper blade. When the equipment is working normally, the two cylinders (206) push the telescopic rod to extend by setting the air pressure, and push the two sides of the upper mounting plate (205) of the scraper to move forward respectively. When the roller axis is not parallel, resulting in uneven contact pressure between the blade and the roller, the two sides of the upper mounting plate (205) of the scraper seat move forward at different angles. The first bearing (209) rotates adaptively, and at this time the bearing mounting seat (210) moves forward or backward under the constraint of the second linear guide (226). When the first adjustment knob (208) is rotated, it drives the first adjustment screw (212) and the outer spherical bearing to move up and down spirally under the constraint of the nut assembly. At this time, the outer spherical bearing drives the screw mounting seat (213) to press down or lift up, thereby driving the middle mounting plate (211) to rotate around the center of the shaft pin (228) by the screw mounting seat (213), so as to realize the adjustment of the contact angle between the scraper blade and the tangent of the roller.
2. The flexible electronic gravure printing squeegee system as described in claim 1, characterized in that, A locking handle (203) is installed on the upper surface of the upper mounting plate (205) of the scraper blade, which is perpendicular to the lower clamping plate (204) of the scraper blade and locks the lower clamping plate (204) of the scraper blade.
3. The flexible electronic gravure printing squeegee system as described in claim 1, characterized in that, The nut assembly includes: a nut (214) and a nut mounting base (215); The other end of the first adjusting screw (212) is threaded inside the nut (214); the nut (214) is inserted into the mounting hole of the nut mounting seat (215), and the nut mounting seat (215) is placed on both sides of the nut (214) and fixed on the lower mounting plate (217).
4. The flexible electronic gravure printing squeegee system as described in claim 1, characterized in that, The lead screw assembly includes: a second adjusting lead screw (231); a square nut (232); a second adjusting knob (224); a locking assembly (225); and a lead screw mounting plate (221). The second adjusting screw (231) is connected to the second adjusting knob (224) at one end, passes through the locking assembly (225) and the screw mounting plate (221) in sequence, and is screwed into the square nut (232) at the other end; the screw mounting plate (221) is installed on the rear side of the bottom surface of the lower mounting plate (217).
5. The flexible electronic gravure printing squeegee system as described in claim 4, characterized in that, The lead screw assembly also includes a feed scale; the feed scale is set on the second adjusting lead screw (231) and is used to record the feed amount in the forward direction of the lead screw scraper.
6. The flexible electronic gravure printing squeegee system as described in claim 1, characterized in that, There are two sets of first linear guides (220), which are respectively set on both sides of the vertical plate. The control components used to control each set of first linear guides (220) include: reducer (222), drive motor (223), eccentric shaft (234), second bearing (235), limit groove (233), and mounting base (219). One end of the reducer (222) is connected to the drive motor (223), and the other end is equipped with an eccentric shaft (234) and fixed behind the mounting base (218). The second bearing (235) is fitted on the eccentric shaft (234) and placed inside the limiting groove (233). The limiting groove (233) is installed on the mounting seat (219) located in front of the vertical plate. When the drive motor (223) rotates, it drives the reducer (222) to rotate, which in turn drives the eccentric shaft (234) to rotate eccentrically. Through the action of the eccentric shaft (234), the mounting base (218) moves back and forth along the first linear guide rail (220).
7. A flexible electronic gravure printing system, characterized in that, Its squeegee is a flexible electronic gravure printing squeegee system as described in any one of claims 1 to 6.